Category, permalink and re-index
I am about to do some major change in my site, would that be effect my SEO
My site has almost 150 posts and pages.
1. Moving almost all of the post to new categories and delete the old categories
2. Change the URL (permalink) post name to category / post name
3. Delete my site map from Google web master tool and re-index them (is it a good practice ?)
Your advice and time is much appreciated.